Proof Buffalos, graded a Perfect Proof-70 Ultra Cameo by NGC, are highly sought after for exceptional deep cameo contrast. American Buffalo Gold Bullion Coins were the first .9999 fine Gold coins struck by the U. S. Mint. When the American Gold Buffalo burst on the scene in 2006, it immediately demanded a place among the world's elite bullion coins. Each of these 2013 Gold Buffalo coins contains 1 oz of pure .9999 fine Gold. Get America's premier Gold coin in a beautiful Proof finish from the West Point Mint. Place your order today!